But what's a 'stewie'?
Stewart Gilligan "Stewie" Griffin is a fictional character in the animated series Family Guy. Stewie is obsessed with world domination and matricide, and has an ambiguous *censored* orientation. He is the youngest child of Peter and Lois Griffin. In addition to siblings Chris and Meg, Stewie has a half-brother Bertram who is unknown to the other Griffins. Stewie is voiced by Seth MacFarlane.
Though he was originally a child evil genius bent on world domination, the writers in more recent episodes usually ignore that aspect of his personality, instead focusing on a more flamboyant character, though he retained an antagonistic role in the show, especially toward Brian in episodes like Three Kings and Lois Kills Stewie. Stewie is considered to be the show's breakout character. Wizard magazine rated him the 95th greatest villain of all time.
Now that's a Stewie.